Crusher.



A. E. SMITH & G. G. SIMONDS. GRUSHER. APPLICATION IILQED MAR. 30, 1911. 1 127 101 Patented Feb. 2, 1915.

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ALBERT E. SMITH AND CHARLES e; SIMONZDS, or MILWAUKEE, WISCONSIN.

CRUSHER.

mentor.

Specification of Letters Patent.

Patented Feb. 2, 1915.

Application filed March 30, 1911. Serial No. 617,888.

T 0 all whom it may concern:

Be it known that we, ALBERT E. SMITH and CHARLES G. Sn-ronns, citizens of the' United States, residing at Milwaukee, in the county of Milwaukee and State of Visconsin, have invented a new and useful Imsimplest means for causing the opposing crushing surfaces to relatively approach and recede while revolving-third, to provide a simple and eflicient means for adjusting the members tocompensate for wear and to vary the size of the product, fourth, to provide means for maintaining a practically constant discharge opening, fifth, to so dispose the members as to-relieve the frame of part. of the crushing strains, and finally, to make such other improvements as tend to the production of a simple, durable and-"eiiicient.

machine for crushing.

We attain these objects by the mechanism illustrated in the accompanying drawing, in whichv F igure 1 shows a central vertical section through the complete machine. Fig. 2 shows a central vertical section through the crushing members illustrating a modified form ofbearings. Fig. 3 shows a central vertical section through the crusher head illustrating a further modified form' of bearing, and Fig. 1 is a partial plan view of Fig. 1, showing a detail of'the adjusting device.

The frame, which is merely a base, comprises a hub 10 connected'to a rim ll by ribs or arms 12.

13 designates the feet or a continuous flange on which the entire machine rests. A stationary shaft or column is fitted and secured centrally in the base by the part 14, or this shaft may be cast integral with the base. Above the base, the shaft consists of two eccentric journal bearings, 15 and 16, the former being on the center line 1, 1, and the latter on the center line 2', 2. The hub 17, fitted to rotate on the bearing 15, is connected to the pulley 18 by arms or webs 19. This pulleyhub l7 rests endwise on the base hub 10. The internal crusher, member or head 20 is fitted to rotate on the bearing 16, while the external crusher member or crown 21 is supported by the pulley and its hub 17 through an upward extension 22 of the pulley 18. This extension is threaded on the inside as shown, and a split ring 23, threaded on its outside engages the threads of 22. The outside of the lower part of the Y crown 21 and the inside of the ring 23 are turned to the same taper to fit each other. A series of lugs 24: projecting from the crown 21 are tapped to fit the set screws 25.

A lug or pin, 11, shown in Fig. 4, projects from each part of the split ring 23 and protrudes betweentwo of the lugs 24:. When the set screws 25 are screwed down against the split ring, the latter is forced outward by the taper on the crown until it seats firmly in the threaded part of 22, when the crown will be entirely carried and drivenby the pulley 18. In order to adjust the crown 21 to or from the head 20 to compensate for wear. on the crushing surfaces it is only necessary to loosen the set screws 25 thus lowering the taper of the crown from the taper of the split ring and loosening the latter in the rim 22. The crown may then be turned relatively to 22, the lug or pin 41 in each part -of the ring carrying the ring along with the crown. After the ring is screwed up or down in the threads of 22 sufficient'to effect the adjustment required, the

set screws are again screwed down thusv drawing the crown upward through the ring and clamping 21, 22, and 23 securely together.

The hub 17 of the pulley is provided with a flange 26 finished smooth to form a transverse antifriction bearing for the crusher head 20.- As 20 and 26 rotate together only on slightly different center lines, there is very little relative movement between them, and as the strains of crushing are about normal to the medial cone between the two crushing surfaces an element of which is a b, the vertical component of the strain of crushing is taken .on the contiguous surfaces of 20 and 26 where the relative movement is slight. The horizontal component acts in opposite directions on the two bearings 15 and 16 producing a shearing strain on the shaft. As the upward strain on the crushingrmember 21 produces a corresponding downward'strain on the crushing member 20 and vice versa, the strains reacting against each other, and as this reaction of the vertical strains between the two crushis fed to the machine through the opening 27 in the crown. Centrifugal force and gravity both act on the material to keep it constantly seated between the crushing surfaces. As the head and crown rotate on eccentric bearings, the crushingsurfaces are nearer together on one side of the centers than on the other by twice the eccentricity.

' as the material is pinched between the sur- I the arms '12 of the base.

"faces and cracked it-again moves downward and outward as far as its size will permit. Asthe surface covered by the small pieces of material resulting from crushing the large pieces is inversely proportional to the thickness of the pieces, we make the distance between the crushing surfacesinversely proportional to the medial diameter. When the material is reduced in size to the size ofv the opening between the lips c and d it will be discharged through the opening and fall between the revolving arms 19, sliding down the inside of the pulley rim 18, but still rotating \jvith it. As the stone leaves the pulley it strikes the stationary conical shaft 410 and can slide around thereon until itscir- .cular motion and consequently its centrifugal force is destroyed when it will slide to-' ward the center down the incline between Byextending the lip d of 20 underneath and very nearly parallel to the lower edge of the crowhQl, the discharge opening will beconstant in size, and the product cannot exceed this size. By reducing the distance that cl underlies c, the discharge. may be facilitated and the var ation in the discharge openin still be kept within very close limits of change.

i As it is important in a crusher to carefully, proportionthe bearings to the load they 'support and-as, it is not obvious how 'the bearing 16 of Fig. 1 can be made larger than shown such change should be needed, we-show in Fig. 3 a modified form of bearing for the head- In the form shown in Fig. 3 the stationary shaft bearing15 is the same as in Fig. 1, but above-15 the shaft is increased n diameter affording a .ring29 and a stud or plug 30 concentric. with 29.

Both 29 and 30 are concentric with ,the head 20.0 on the center line 2 2, while the bearing 15 has the center line 11. WVhen' the crushing strain is in the direction of" the arrow 6 its horizontal component will be taken on the three semi-cylindrical surfaces 31, 32, and 33, which gives a much'larger bearing than 16 in Fig. l. v I Fig. 2 shows a. modification inwhich an upper bearing is provided for. the crown to assist the bearing 15. The shaft is extended through the head 201 and thus forms the bearing 160. The shafta'lso further extended forms the bearing 31 concentric with The crown 210 is extended upward 15. forming the revolving feed hopper 270. Arms or webs 35 extend from the crown 210 connecting it to the hub 36 which..is closed on top. The sleeve 37 is provided inside the hub 36 to bear on the top of the head 201,

sothat the bearing 160 and 34 are kept free from dirt in. all positions to which the crown 210 may be adjusted.

. Various changes in the form and design of this machine may be made without departing from the spirit of our invention.

Having fully described this device, what we claim is 1. A crusher comprislngastationary shaft having eccentric bearings, and two crushing members rotatable one on each of said bearings. i

2. A crusher comprising a stationary shaft having eccentric bearings, and two crushing members rotatably mounted on said bearings and having a reaction bearing against each other.

3. A'crusher comprising a stationary shaft,a crusher member rotatably mounted on the exterior of said shaft, 21 supporting member rotatably mounted on said shaft eccentric of said crusher member, and a second crusher member connected to said supporting member. 1

4.,A- crusher comprising, a stationary shaft having eXternal bearings on different center lines, a' supporting member rotatable on said shaft around one center line, a crusher member rotatable on said shaft around the other center line, and a second crusher member adjustably attached to said supporting member.. 1

5. In a crusher, an annular supporting member and a crusher member, one of said members being threaded and theother hav ing a conical surface, a wedge shaped member there between adapted to engage'said surfaces, and means for f rcingsaid wedge into clamping engagem nt with said members. V

6. In a crusher, a supporting member and a crushing member, .one being interior of the other, onejof said members being screw threaded and the other having a tapering surface, a "wedge shaped member there between adapted to engage said screw thread and tapering surface, and means for forcing said wedge into clamping engagement with said members.

7. In a crusher, an annular supporting member and a crusher member, the oppose ing surfaces of said members being screw threaded in one instance and conical in the other, an annular wedge shaped member there between, and means for forcing the wedge along the cone and clamping it tight in the screw thread 8..A crusher comprising two rotatable crushing members disposed with'the crushing surface of one interior to that of the other and a tapering space therebetween, a shaft having external eccentric bearings supporting said members, and driving, means attached to the outside member.

9.. A crusher comprising two rotatable crushing members disposed with the crushing surface of one interior to that of the other anda tapering space there between, said space being wider and nearer the axes at one end and narrower and more remote at the other end, a shaft having external eccentric bearings engaging said members, and driving .means attached to the outside member. g

10. A crusher comprising a supporting member, an exterior crushing member attached thereto, an interior crusher member having a bearing against the supporting member and having its crushing surface lying between said bearing and the exterior member, and a shaft having eccentric bearings on which said interior member and supporting member rotate.

11. A crusher comprising a rotatable .supporting member having a bearing surface at right angles "to its axis, a hollow conical crusher member attached to said supporting member, a rotatable conical crusher head resting on said bearing and having its crushing surface between said bearing and the hollow member, and a shaft having eccentric. bearings on .which said supporting member and crushing head may rotate.

12, A crusher comprising a supporting member having a rim and hub, a hollow conical crusher member attached to said rim, a reaction bearing on said hub forming the base of thehollow cone, a conical crusher head resting on said bearing, and a shaft having eccentric bearings engaging said hub and cone.

13. A crusher comprising two rotatable crusher members one interior of the other, and a stationary shaft having eccentric bearings engaging interior bearings in said crusher members.

14. In a crusher, a crusher head, a shaft, and internal and externalbearing surfaces on said head engaging external and internal bearing surfaces on said shaft. v

15. A crusher comprising two rotatable crusher members one interior of the other,

' a stationary shaft having eccentric bearings engaging said crusher members, the exter1or crusher member having a bearing on' said shaft on each side of the interior member.

16. A crusher comprising two rotatable member and having a reaction bearing against the other crusher member, a shaft having eccentric external bearings engaging said crusher members, a feed opening through the exterior member at its axis, and

discharge openings through the supporting member.

17.,A crusher comprising two rotatable crusher members one interior of the other, a shaft having eccentric external bearings engaging said members, a feed opening through the exterior member at its axis, and discharge openings through the exterior member outside of the periphery of the interior crusher member.

18. A crusher comprising two rotatable crusher. members one interior of the other 'said members, the crushing surfaces of the members converging from the axes outward and forming an angle with the axes, the outer edges or parts of said surfaces being substantially perpendicular to the axes.

19. A crusher comprising two rotatable crusher members one interior of the other, a base piece or frame carrying a central cylindrical column, eccentric bearings on the exterior 'of said column positioning the crusher members, a supporting member at tached to the exteriorcrusher member and having a reaction bearing against the interior member, and a step bearing onthe frame carrying the supporting member.

20. A crusher comprising two rotatable crusher'members one interior of the other,

a base piece or frame carrying a central column, eccentric bearings provided on the exterior of said column positioning the center lines of the crusher members, a supporting member adjustably attached to the exterior crusher member and supporting the interior member-on a-reaction bearing, a step bearing on the frame carrying said supporting member, and means for driving the supporting member.

21. A crusher comprising two rotatable crusher members disposed With their crushing surfaces one interior of the other and inclined outward from their axes, a step bearing on the frame carrying the Weight ofboth crushing members, and a shaft having external eccentric bearings engaging. corresponding bearings in said crusher members.

2 A crusher comprising .two crusher members one interior of the other, a shaft having eccentric bearings engaging said crusher members, the exterior crusher member having a bearing on said shaft on each side ofthe interior member, and means for producing relative rotation between the shaft and crusher members.

23. A crusher comprising two rotatable crusher heads one interior of the other, a supporting member attached to the exterior crusher member and antifrictionally carrying the interior member, a feed opening at the axes of the members, a discharge opening between the peripheries of the crushing surfaces and downward through the supporting member.

24:. A crusher comprising two rotatable I crusher members, means for feeding at the center of said members and discharging at the periphery thereof, a hub rigidly attached'to the exterior crusher member having a reaction bearing against the interior crusher member and having discharge open-- ings therethrough, a base frame for the crusher having a central hub affording supporting means for the rotating members,-

and a shell connected by arms to saidhub and having'an interior conical surface converging downwardly from the exterior of members one. interior'of the other, a shaft having eccentric bearings engaging interior 261A crusher comprising two crusher means for causing relative-rotation between said shaft and crusher members. v

' ALBERT E. SMITH. CHARLES G. SIMONDS. Witnesses: 1

E. G. MANTTEELOOR, LILLIE :SCHUMAC'HEB.

40 vbearings in said .r'crusher members, and 

